Nice route that then keep going past Holbrook then through Manningtree back way to Harwich via Wrabness then back way to Walton, (Central Kiosk for a wet & a wad) via little Oakley
you could add Clacton afterwards too.

We are the Pilgrims, master; we shall go Always a little further: it may be Beyond that last blue mountain barred with snow, Across that angry or that glimmering sea.